John began to feel little beads of sweat going down the back of his neck. His words seemed to have had no visible _______ on the man. 
#10829
A
affect
B
effect
C
affection
D
impact
推荐题目
It was very kind of you to do the washing-up, but you _____ it.
#13892
A
needn’t do
B
shouldn’t do
C
mustn’t have done
D
needn’t have done
After 15 years in the USA, he finally decided to ________ American citizenship.
#12082
A
concentrate on
B
apply for
C
put off
D
lead to
A new food market has been built for the _____of the residents.
#13293
A
happiness
B
convenience
C
quietness
D
economy